Differential cross sections for ground-state neutrons from the ${\mathrm{C}}^{14}(d, n){\mathrm{N}}^{15}$ reaction have been measured at $E_d=3.53\mathrm{} \mathrm{Mev}\mathrm{and}2.786\mathrm{Mev}$ by a neutron spectrometer. A stripping peak implying $l_p=1\mathrm{}$ is observed. The excitation function of the ground-state neutrons has been measured from $E_d=1.2\mathrm{}$ Mev to $E_d=3.53\mathrm{}$ Mev. A number of resonances were found corresponding to virtual states of ${\mathrm{N}}^{16}$. The angular distributions of neutrons associated with the 5.28-, 5.31-Mev doublet (unresolved) and 6.33-Mev levels of ${\mathrm{N}}^{15}$ were measured by photographic emulsion technique. A stripping peak characteristic of $l_p=0\mathrm{}$ corresponds to the unresolved doublet, and $l_p=1\mathrm{}$ to the 6.33-Mev state. The excitation function for all neutrons from ${\mathrm{C}}^{14}(d, n){\mathrm{N}}^{15}$ was measured both by "slow" and "fast" neutron counters. Several possible slow-neutron thresholds were found corresponding to excited states of ${\mathrm{N}}^{15}$. The sensitivity of the slow-neutron threshold technique was checked by the ${\mathrm{O}}^{16}(d, n){\mathrm{F}}^{17}$. Accurate values of these thresholds are reported.

• Received 25 January 1961

DOI:https://doi.org/10.1103/PhysRev.123.1316